source: Revenant/marslib/include/mars_meta.h@ 25c4774

port/mars-tycoon
Last change on this file since 25c4774 was 80a6a52, checked in by Jonathan Neufeld <support@…>, 3 years ago

Get to a compile state for terrain procedural generation
  • Property mode set to 100755
File size: 854 bytes
Line 
1#pragma once
2
3namespace mars
4{
5 template <bool L, bool R>
6 struct andb {};
7
8 template <>
9 struct andb <true, true> { static const bool value = true; };
10
11 /* FIXME: Couldn't ever get this to work right
12 template <typename LCond, typename RCond>
13 struct and : public andb<LCond::value, RCond::value> {};
14 */
15
16 template <bool B, typename E = void>
17 struct enable_ifb { typedef E Type; };
18
19 template <typename E>
20 struct enable_ifb <false, E> {};
21
22 /* FIXME: Couldn't ever get this to work right
23 template <typename J, typename E = void>
24 struct enable_if : public enable_ifb<J::value, E> {};
25 */
26
27 template <typename E>
28 struct has_def { static const bool value = sizeof(E *) > 0; };
29
30 template<typename T>
31 struct identity { typedef T type; };
32
33 template<unsigned N>
34 struct quantity { unsigned value = N; };
35}
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